Sampling Immigrants in the Netherlands and Germany Kurt Salentin1* and Hans Schmeets2
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Salentin and Schmeets Comparative Migration Studies (2017) 5:21 DOI 10.1186/s40878-017-0062-2 ORIGINALARTICLE Open Access Sampling immigrants in the Netherlands and Germany Kurt Salentin1* and Hans Schmeets2 * Correspondence: [email protected] Abstract 1Bielefeld University, Institute for Interdisciplinary Research on This paper discusses the limitations of harmonised sampling designs for survey Conflict and Violence, research on immigrants in Germany and the Netherlands. Although the concepts for Universitätsstraße 25, 33615 immigrants are largely similar in both countries, there are severe constraints when it Bielefeld, Germany The manuscript belongs to the comes to comparable sampling designs. While in the Netherlands a sample can be special issue titled “Sampling drawn from a national population register by Statistics Netherlands, this is impossible Migrants in Europe: How to develop in Germany due to the decentralised setup of the population register and legal a comparative design?” guest edited by Hans-Jürgen Andreß and restrictions on merging existing databases. Harmonisation of immigrant statistics is Romana Careja. thus less a problem at the concept level than in the implementation. Achieving a Full list of author information is harmonised data collection on immigrants for Germany and the Netherlands will be available at the end of the article a major challenge. Keywords: Sampling, Comparative research, Immigrants, The Netherlands, Germany, Population register, Harmonisation Introduction The aim of this article is to provide researchers interested in comparative migra- tion and minority studies an introduction to the potential and the limitations of sampling migrant and minority populations in the Netherlands and Germany. Harmonized data-collection is crucial for a comparison of survey results across countries (Huddleston, Niessen, & Tjaden, 2013). Two major challenges will be discussed: (1) to understand the concepts used and the groups to which they are applied; and (2) to implement representative samples of the target populations. Migration and integration researchers in the academic field and in official statistics are the intended audience. The two countries are selected because they are not only geographical neighbours but also comparable in several ways. Both are export-oriented industrial economies with a history of intense labour recruitment after World War II and they have migrants from important countries of origin in common. Their concepts of immigrants are comparable and in both countries one in five people is part of an immigrated family. Both have comprehensive popula- tion registers that can serve as sampling frames. However, in many fields, including immigrants, the statistical figures are not harmonised between Germany and the Netherlands. One important reason is the lack of identical sampling frames. In this paper we will address the challenges of drawing samples based on immigrants living in the Netherlands and Germany. © The Author(s). 2017 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Salentin and Schmeets Comparative Migration Studies (2017) 5:21 Page 2 of 21 Before the sampling strategies will be discussed, we will outline the various concepts referring to immigrants, and their implementation. It will be demonstrated that in both countries traditional randomized sampling techniques among immigrants necessitate an adjustment of the population definition as many immigrants are not (yet) registered and consequently are not found in sampling frames. Furthermore, the two countries differ in the possibilities to use population registers for sampling designs and link registers enab- ling harmonised sampling strategies. We will start with a short overview of the immi- grants, followed by the concepts and sampling techniques used. In the conclusions, we will provide an answer to which extent harmonised sampling strategies are feasible and the consequences for survey research. Immigrants in The Netherlands and Germany In line with many other European countries, the Netherlands has a relatively short history of immigration. Large-scale immigration occurred in earlier centur- ies, but very little between 1850 and 1950. From 1950s onwards, high demand triggered a wave of labour immigration. The perception was basically that the immigrants, called guest laborers, would return to their country of origin. Most immigrants came from southern Europe, mainly Spain and Turkey, together with immigrants from Morocco. After this influx of immigrants, many (Dutch) people from Surinam and the Netherlands Antilles came, followed by the refugees from Eastern European countries (e.g. Bosnia), Iraq, Somalia, and Afghanistan. More recently, immigrants from EU-countries Poland, Bulgaria, Romania and from Syria entered the Netherlands. Immigrants who stay longer than 4 months are required to register in the municipality they moved to. From 1950 onwards, the yearly registered immigrant numbers in the Municipal Personal Records Database (BRP) have almost tripled: from 71 thousand in 1950 to 205 thousand in 2015. These include also Dutch citizens who returned to the Netherlands after a stay abroad. Note that in the 1950–2015 time span, the total population almost doubled to 17.0 million, including 3.8 million immigrants (first and second generation). Most originate from Turkey, Morocco, Indonesia, Germany and Surinam (350 to 400 thousand per country of origin). Also a substantial number (over 100 thousand) originate from Aruba and the former Netherlands Antilleans, Poland, and Belgium. Detailed information as to age/gender, regional distribution, urbanity, residence duration are available, all based on register information (see: www.cbs.nl; various Statline tables).1 Germany has always been a country of immigration and emigration, with poverty, persecution, wars, industrialisation and economic growth as push and pull factors (Bade, Emmer, Lucassen, & Oltmer, 2010). After World War II, popu- lation movements reached unprecedented numbers. 12.5 million displaced persons from Eastern Europe arrived in the two German states in the direct aftermath of the war and large numbers of labourers abducted by the Nazi regime remained. From 1955 on, 14 million industrial labourers and their families from Mediterranean countries were recruited to the Federal Republic of Germany and from Vietnam and Mozambique to the German Democratic Republic. Despite high remigration rates, 5.3 million persons from Turkey, Italy and former Yugoslavia and other countries became permanent residents (Statistisches Bundesamt, 2016, p. 62). In the 1980s, 20,000 to Salentin and Schmeets Comparative Migration Studies (2017) 5:21 Page 3 of 21 120,000 people from Vietnam, Sri Lanka, Iran and other war-torn states sought asylum in Germany each year. In the 1990–2016 period, a total of 4.4 million people from regions such as former Yugoslawia applied for asylum (Bundesamt für Migration und Flüchtlinge, 2017, p. 3). In 2016 alone, 890,000 refugee arrivals were registered,2 mainly by Syrians, Iraqis, Afghans and other persons from Africa and the Arabian peninsula. 4.5 million Aussiedler of German descent from the Soviet Union, Poland and Romania mainly arrived between 1989 and 1999 (Bundesverwaltungsamt, 2016, p. 5). Meanwhile the eastward ex- pansion of the European Union attracted migrants from Poland, Romania and Bulgaria, along with a general increase of migration in conjunction with intra-European freedom of mobility. New migrant categories comprise foreign spouses to Germans from Eastern Europe, Southeast Asia, and Latin America (Aybek, Babka von Gostomski, & Rühl, 2013). In short, both countries show many similarities in the influx of immigrants and the total share of immigrants. However, history reveals that the countries of origin differ, indicating that for a comparison between the Netherlands and Germany, the composition of the immigrants is an important aspect to deal with. In the next section the concepts used in both countries will be compared. Concepts The collection of comparable, harmonised, international data becomes more important due to the salience of migration at the political level after 1989 (Kraler, Reichel, & Entzinger, 2015, p. 41). In 1989 the International Organisation for Migration (IOM), the successor of the Intergovernmental Committee for Migration (ICM), was established as expert organisation, and in 1990 the office of the United Nations High Commissioner for Refugees (UNHCR) was expanded. In addition, from the perspective of the 2030 Sustainability Development Goals, the United Nations Office of the High Commissioner for Human Rights (OHCHR) recommends to collect and publish official statistical data disaggregated by ethnicity and migration (OHCHR, 2016, p. 6). Such data should be based on self- identification, rather than through imputation or proxy (OHCHR, 2016, p. 8). Harmonising international migration statistics are guided by regulations from the European Commission, such as 862/2007, adopted in July 2007, which is one of the cornerstones of migration statistics policy in the EU. Eurostat, the EU statistical office, is in charge to implement such regulations in